Nissan Juke (2012 year). Service Repair Manual - part 78

 

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Nissan Juke (2012 year). Service Repair Manual - part 78

 

 

DIAGNOSIS SYSTEM (ECM)

EC-65

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Explanation for Driving Patterns for “Misfire <Exhaust Quality Deterioration>”, “Fuel Injection System”

Driving Pattern B

Refer to 

EC-67, "DIAGNOSIS DESCRIPTION : Driving Pattern"

.

*1: When the same malfunction is de-

tected in two consecutive trips, MIL 
will light up.

*2: MIL will turn OFF after vehicle is driv-

en 3 times (pattern B) without any 
malfunctions.

*3: When the same malfunction is de-

tected in two consecutive trips, the 
DTC and the freeze frame data will be 
stored in ECM.

*4: The DTC and the freeze frame data 

will not be displayed any longer after 
vehicle is driven 80 times (pattern C) 
without the same malfunction. (The 
DTC and the freeze frame data still 
remain in ECM.)

*5: When a malfunction is detected for 

the first time, the 1st trip DTC and the 
1st trip freeze frame data will be 
stored in ECM.

*6: The 1st trip DTC and the 1st trip 

freeze frame data will be cleared at 
the moment OK is detected.

*7: When the same malfunction is de-

tected in the 2nd trip, the 1st trip 
freeze frame data will be cleared.

*8: 1st trip DTC will be cleared when ve-

hicle is driven once (pattern C) with-
out the same malfunction after DTC 
is stored in ECM.

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EC-66

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DIAGNOSIS SYSTEM (ECM)

Driving Pattern C

Refer to 

EC-67, "DIAGNOSIS DESCRIPTION : Driving Pattern"

.

Example:
If the stored freeze frame data is as per the following:
Engine speed: 850 rpm, Calculated load value: 30%, Engine coolant temperature: 80

°

C (176

°

F)

To be satisfied with driving pattern C, the vehicle should run under the following conditions:
Engine speed: 475 – 1,225 rpm, Calculated load value: 27 – 33%, Engine coolant temperature: more than
70

°

C (158

°

F)

Relationship Between MIL, DTC, 1st Trip DTC and Driving Patterns Except For “Misfire <Exhaust
Quality Deterioration>”, “Fuel Injection System”

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DIAGNOSIS SYSTEM (ECM)

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Explanation for Driving Patterns Except for “Misfire <Exhaust Quality Deterioration>”, “Fuel Injection
System”

Driving Pattern A

Refer to 

EC-67, "DIAGNOSIS DESCRIPTION : Driving Pattern"

.

Driving Pattern B

Refer to 

EC-67, "DIAGNOSIS DESCRIPTION : Driving Pattern"

.

DIAGNOSIS DESCRIPTION : Driving Pattern

INFOID:0000000007576983

CAUTION:

Always drive at a safe speed.

DRIVING PATTERN A

Driving pattern A means a trip satisfying the following conditions.
• Engine speed reaches 400 rpm or more.
• Engine coolant temperature rises by 20

°

C (36

°

F) or more after starting the engine.

• Engine coolant temperature reaches 70

°

C (158

°

F) or more.

• The ignition switch is turned from ON to OFF.
NOTE:
• When the same malfunction is detected regardless of driving conditions, reset the counter of driving pattern

A.

• When the above conditions are satisfied without detecting the same malfunction, reset the counter of driving

pattern A.

DRIVING PATTERN B

Driving pattern B means a trip satisfying the following conditions.
• Engine speed reaches 400 rpm or more.
• Engine coolant temperature reaches 70

°

C (158

°

F) or more.

• Vehicle speed of 70 – 120 km/h (44 – 75 MPH) is maintained for 60 seconds or more under the control of

closed loop.

• Vehicle speed of 30 – 60 km/h (19 – 37 MPH) is maintained for 10 seconds or more under the control of

closed loop.

• Under the closed loop control condition, the following state reaches 12 seconds or more in total: Vehicle

speed of 4 km/h (2 MPH) or less with idling condition.

• The state of driving at 10 km/h (7 MPH) or more reaches 10 minutes or more in total.
• A lapse of 22 minutes or more after engine start.
NOTE:
• Drive the vehicle at a constant velocity.
• When the same malfunction is detected regardless of driving conditions, reset the counter of driving pattern

B.

• When the above conditions are satisfied without detecting the same malfunction, reset the counter of driving

pattern B.

DRIVING PATTERN C

Driving pattern C means operating vehicle as per the following:
The following conditions should be satisfied at the same time:
Engine speed: (Engine speed in the freeze frame data) 

±

375 rpm

*1: When the same malfunction is de-

tected in two consecutive trips, MIL 
will light up.

*2: MIL will turn OFF after vehicle is driv-

en 3 times (pattern B) without any 
malfunctions.

*3: When the same malfunction is de-

tected in two consecutive trips, the 
DTC and the freeze frame data will be 
stored in ECM.

*4: The DTC and the freeze frame data 

will not be displayed any longer after 
vehicle is driven 40 times (pattern A) 
without the same malfunction.
(The DTC and the freeze frame data 
still remain in ECM.)

*5: When a malfunction is detected for 

the first time, the 1st trip DTC and the 
1st trip freeze frame data will be 
stored in ECM.

*6: 1st trip DTC will be cleared after vehi-

cle is driven once (pattern B) without 
the same malfunction.

*7: When the same malfunction is de-

tected in the 2nd trip, the 1st trip 
freeze frame data will be cleared.

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EC-68

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DIAGNOSIS SYSTEM (ECM)

Calculated load value: (Calculated load value in the freeze frame data) x (1

±

0.1) [%]

Engine coolant temperature condition:
• When the freeze frame data shows lower than 70

°

C (158

°

F), engine coolant temperature should be lower

than 70

°

C (158

°

F).

• When the freeze frame data shows higher than or equal to 70

°

C (158

°

F), engine coolant temperature should

be higher than or equal to 70

°

C (158

°

F).

NOTE:
• When the same malfunction is detected regardless of the above vehicle conditions, reset the counter of driv-

ing pattern C.

• When the above conditions are satisfied without detecting the same malfunction, reset the counter of driving

pattern C.

• The 1st trip DTC will be cleared when C counter is counted once without the same malfunction after DTC is

stored in ECM.

DIAGNOSIS DESCRIPTION : System Readiness Test (SRT) Code

INFOID:0000000007576984

System Readiness Test (SRT) code is specified in Service $01 of SAE J1979/ISO 15031-5.
As part of an enhanced emissions test for Inspection & Maintenance (I/M), certain states require the status of
SRT be used to indicate whether the ECM has completed self-diagnosis of major emission systems and com-
ponents. Completion must be verified in order for the emissions inspection to proceed.
If a vehicle is rejected for a State emissions inspection due to one or more SRT items indicating “INCMP”, use
the information in this Service Manual to set the SRT to “CMPLT”.
In most cases the ECM will automatically complete its self-diagnosis cycle during normal usage, and the SRT
status will indicate “CMPLT” for each application system. Once set as “CMPLT”, the SRT status remains
“CMPLT” until the self-diagnosis memory is erased.
Occasionally, certain portions of the self-diagnostic test may not be completed as a result of the customer's
normal driving pattern; the SRT will indicate “INCMP” for these items.
NOTE:
The SRT will also indicate “INCMP” if the self-diagnosis memory is erased for any reason or if the ECM mem-
ory power supply is interrupted for several hours.
If, during the state emissions inspection, the SRT indicates “CMPLT” for all test items, the inspector will con-
tinue with the emissions test. However, if the SRT indicates “INCMP” for one or more of the SRT items the
vehicle is returned to the customer untested.
NOTE:
If permanent DTC is stored or MIL illuminates during the state emissions inspection, the vehicle is also
returned to the customeruntested even though the SRT indicates “CMPLT” for all test items. therefore, it is
important to check SRT (“CMPLT”), DTC (No DTCs) and permanent DTC (No permanent DTC) before the
inspection.

SRT SET TIMING

SRT is set as “CMPLT” after self-diagnosis has been performed one or more times. Completion of SRT is
done regardless of whether the result is OK or NG. The set timing is different between OK and NG results and
is shown in the table below.

Self-diagnosis result

Example

Diagnosis

Ignition cycle 

 ON 

OFF

 ON 

OFF

 ON 

OFF

 ON 

All OK

Case 1

P0400

OK (1)

— (1)

OK (2)

— (2)

P0402

OK (1)

— (1)

— (1)

OK (2)

P1402

OK (1)

OK (2)

— (2)

— (2)

SRT of EGR

“CMPLT”

“CMPLT”

“CMPLT”

“CMPLT”

Case 2

P0400

OK (1)

— (1)

— (1)

— (1)

P0402

— (0)

— (0)

OK (1)

— (1)

P1402

OK (1)

OK (2)

— (2)

— (2)

SRT of EGR

“INCMP”

“INCMP”

“CMPLT”

“CMPLT”

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DIAGNOSIS SYSTEM (ECM)

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OK: Self-diagnosis is carried out and the result is OK.

NG: Self-diagnosis is carried out and the result is NG.

—: Self-diagnosis is not carried out.

When all SRT related self-diagnoses show OK results in a single cycle (Ignition OFF-ON-OFF), the SRT will
indicate “CMPLT”. 

 Case 1 above

When all SRT related self-diagnoses show OK results through several different cycles, the SRT will indicate
“CMPLT” at the time the respective self-diagnoses have at least one OK result. 

 Case 2 above

If one or more SRT related self-diagnoses show NG results in 2 consecutive cycles, the SRT will also indicate
“CMPLT”. 

 Case 3 above

The table above shows that the minimum number of cycles for setting SRT as “INCMP” is the number one (1)
for each self-diagnosis (Case 1 & 2) or the number two (2) for one of self-diagnoses (Case 3). However, in
preparation for the state emissions inspection, it is unnecessary for each self-diagnosis to be executed twice
(Case 3) for the following reasons:
• The SRT will indicate “CMPLT” at the time the respective self-diagnoses have one (1) OK result.
• The emissions inspection requires “CMPLT” of the SRT only with OK self-diagnosis results.
• During SRT driving pattern, the 1st trip DTC (NG) is detected prior to “CMPLT” of SRT and the self-diagnosis

memory must be erased from the ECM after repair.

• If the 1st trip DTC is erased, all the SRT will indicate “INCMP”.

NOTE:
SRT can be set as “CMPLT” together with the DTC(s). Therefore, DTC check must always be carried out
prior to the state emission inspection even though the SRT indicates “CMPLT”.

DIAGNOSIS DESCRIPTION : Permanent Diagnostic Trouble Code (Permanent DTC)

INFOID:0000000007576985

Permanent DTC is defined in SAE J1979/ISO 15031-5 Service $0A.
ECM stores a DTC issuing a command of turning on MIL as a permanent DTC and keeps storing the DTC as
a permanent DTC until ECM judges that there is no presence of malfunction.
Permanent DTCs cannot be erased by using the erase function of CONSULT or Generic Scan Tool (GST) and
by disconnecting the battery to shut off power to ECM. This prevents a vehicle from passing the in-use inspec-
tion without repairing a malfunctioning part.
When not passing the in-use inspection due to more than one permanent DTC, permanent DTCs should be
erased, referring to this manual.
NOTE:
• The important items in in-use inspection are that MIL is not ON, SRT test items are set, and permanent

DTCs are not included.

• Permanent DTCs do not apply for regions that permanent DTCs are not regulated by law.

PERMANENT DTC SET TIMING

The setting timing of permanent DTC is stored in ECM with the lighting of MIL when a DTC is confirmed.

NG exists

Case 3

P0400

OK

OK

P0402

P1402

NG

NG

NG

(Consecutive 

NG)

(1st trip)

DTC

1st trip DTC

1st trip DTC

DTC

(= MIL ON)

SRT of EGR

“INCMP”

“INCMP”

“INCMP”

“CMPLT”

Self-diagnosis result

Example

Diagnosis

Ignition cycle 

 ON 

OFF

 ON 

OFF

 ON 

OFF

 ON 

Revision: 2011 October

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EC-70

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DIAGNOSIS SYSTEM (ECM)

DIAGNOSIS DESCRIPTION : Malfunction Indicator Lamp (MIL)

INFOID:0000000007576986

When emission-related ECU detects a malfunction in the emission
control systems components and/or the powertrain control compo-
nents (which affect vehicle emissions), it turns on/blinks MIL to
inform the driver that a malfunction has been detected.
1.

The MIL illuminates when ignition switch is turned ON (engine is
not running).
NOTE:
Check the MIL circuit if MIL does not illuminate. Refer to 

EC-

519, "Diagnosis Procedure"

.

2.

When the engine is started, the MIL should go off.
NOTE:
If MIL continues to illuminate/blink, perform self-diagnoses and
inspect/repair accordingly because an emission-related ECU has detected a malfunction in the emission
control systems components and/or the powertrain control components (which affect vehicle emissions).

On Board Diagnosis Function

INFOID:0000000007576987

ON BOARD DIAGNOSIS ITEM

The on board diagnostic system has the following functions.

BULB CHECK MODE

Description

This function allows damage inspection in the MIL bulb (blown, open circuit, etc.).

Operation Procedure

1.

Turn ignition switch ON.

2.

The MIL on the instrument panel should stay ON.
If it remains OFF, check MIL circuit. Refer to 

EC-519, "Diagnosis Procedure"

.

SRT STATUS MODE

Description

This function allows to read if ECM has completed the self-diagnoses of major emission control systems and
components. For SRT, refer to 

EC-68, "DIAGNOSIS DESCRIPTION : System Readiness Test (SRT) Code"

.

Operation Procedure

1.

Turn ignition switch ON and wait 20 seconds.

2.

SRT status is indicated as shown blow.
• ECM continues to illuminate MIL if all SRT codes are set.

JSBIA1315ZZ

Diagnostic test mode

Function

Bulb check

MIL can be checked. 

SRT status

ECM can read if SRT codes are set.

Malfunction warning

If ECM detects a malfunction, it illuminates or blinks MIL to inform the driver that a malfunction has 
been detected.

Self-diagnostic results

DTCs or 1st trip DTCs stored in ECM can be read.

Accelerator pedal released po-
sition learning

ECM can learn the accelerator pedal released position. Refer to 

EC-130, "Work Procedure"

.

Throttle valve closed position 
learning

ECM can learn the throttle valve closed position. Refer to 

EC-131, "Work Procedure"

.

Idle air volume learning

ECM can learn the idle air volume. Refer to 

EC-132, "Work Procedure"

.

Mixture ratio self-learning value 
clear

Mixture ratio self-learning value can be erased. Refer to 

EC-135, "Work Procedure"

.

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DIAGNOSIS SYSTEM (ECM)

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• ECM blinks MIL for about 10 seconds if all SRT codes are not set.

MALFUNCTION WARNING MODE

Description

In this function ECM turns on or blinks MIL when it detects a malfunction in the emission control system com-
ponents and/or the powertrain control components (which affect vehicle emissions) to inform the driver that a
malfunction has been detected.

Operation Procedure

1.

Turn ignition switch ON.

2.

Check that MIL illuminates.
If it remains OFF, check MIL circuit. Refer to 

EC-519, "Diagnosis Procedure"

.

3.

Start engine and let it idle.
• For two trip detection logic diagnoses, ECM turns on MIL when it detects the same malfunction twice in

the two consecutive driving cycles.

• For 1st trip detection logic diagnoses, ECM turns on MIL when it detects a malfunction in one driving

cycle.

• ECM blinks MIL when it detects a malfunction that may damage the three way catalyst (misfire).

SELF-DIAGNOSTIC RESULTS MODE

Description

This function allows to indicate DTCs or 1st trip DTCs stored in ECM according to the number of times MIL is
blinking.

How to Set Self-diagnostic Results Mode

NOTE:
• It is better to count the time accurately with a clock.
• It is impossible to switch the diagnostic mode when an accelerator pedal position sensor circuit has a mal-

function.

• After ignition switch is turned off, ECM is always released from the “self-diagnostic results” mode.
1.

Confirm that accelerator pedal is fully released, turn ignition switch ON and wait 3 seconds.

2.

Repeat the following procedure quickly five times within 5 seconds.
• Fully depress the accelerator pedal.
• Fully release the accelerator pedal.

3.

Wait 7 seconds, fully depress the accelerator pedal and keep it depressed for approx. 10 seconds until the
MIL starts blinking.
NOTE:
Do not release the accelerator pedal for 10 seconds if MIL starts blinking during this period. This blinking
is displaying SRT status and is continued for another 10 seconds.

4.

Fully release the accelerator pedal.
ECM has entered to “Self-diagnostic results” mode.

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DIAGNOSIS SYSTEM (ECM)

NOTE:
Wait until the same DTC (or 1st trip DTC) appears to completely confirm all DTCs.

How to Read Self-diagnostic Results

The DTC and 1st trip DTC are indicated by the number of blinks of the MIL as shown below.
The DTC and 1st trip DTC are displayed at the same time. If the MIL does not illuminate in diagnostic test
mode I (Malfunction warning), all displayed items are 1st trip DTCs. If only one code is displayed when the MIL
illuminates in “malfunction warning” mode, it is a DTC; if two or more codes are displayed, they may be either
DTCs or 1st trip DTCs. DTC No. is same as that of 1st trip DTC. These unidentified codes can be identified by
using the CONSULT or GST. A DTC will be used as an example for how to read a code.

A particular trouble code can be identified by the number of four-digit numeral flashes per the following.

The length of time the 1,000th-digit numeral flashes on and off is 1.2 seconds consisting of an ON (0.6-sec-
onds) - OFF (0.6-seconds) cycle.
The 100th-digit numeral and lower digit numerals consist of a 0.3-seconds ON and 0.3-seconds OFF cycle.
A change from one digit numeral to another occurs at an interval of 1.0-second OFF. In other words, the later
numeral appears on the display 1.3 seconds after the former numeral has disappeared.
A change from one trouble code to another occurs at an interval of 1.8-seconds OFF.

PBIB0092E

PBIB3005E

Number

0

1

2

3

4

5

6

7

8

9

A

B

C

D

E

F

Flashes

10

1

2

3

4

5

6

7

8

9

11

12

13

14

15

16

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In this way, all the detected malfunctions are classified by their DTC numbers. The DTC 0000 refers to no mal-
function. Refer to 

EC-102, "DTC Index"

.

How to Erase Self-diagnostic Results

By performing this procedure, ECM memory is erased and the following diagnostic information is erased as
well.
• Diagnostic trouble codes
• 1st trip diagnostic trouble codes
• Freeze frame data
• 1st trip freeze frame data
• System readiness test (SRT) codes
• Test values
NOTE:
Also, if a battery terminal is disconnected, ECM memory is erased and the diagnostic information as listed
above is erased. (The amount of time required for erasing may vary from a few seconds to several hours.)

1.

Turn ignition switch OFF and wait at least 10 seconds.

2.

Turn ignition switch ON.

3.

Turn ignition switch OFF and wait at least 10 seconds.

4.

Turn ignition switch ON.

5.

Set ECM in “self-diagnostic results” mode.

6.

The diagnostic information has been erased from the backup memory in the ECM.
Fully depress the accelerator pedal and keep it depressed for more than 10 seconds.

7.

Fully release the accelerator pedal, and confirm the DTC 0000 is displayed.

CONSULT Function

INFOID:0000000007576988

FUNCTION

*: The following emission-related diagnostic information is cleared when the ECM memory is erased.

• Diagnostic trouble codes

• 1st trip diagnostic trouble codes

• Freeze frame data

• 1st trip freeze frame data

• System readiness test (SRT) codes

• Test  values

WORK SUPPORT MODE

Work Item

Diagnostic test mode

Function

Work support

This mode enables a technician to adjust some devices faster and more accurately by following the in-
dications on the CONSULT unit.

Self-diagnostic results

Self-diagnostic results such as 1st trip DTC, DTCs and 1st trip freeze frame data or freeze frame data 
can be read and erased quickly.*

Data monitor

Input/Output data in the ECM can be read.

Active test

Diagnostic Test Mode in which CONSULT drives some actuators apart from the ECMs and also shifts 
some parameters in a specified range.

DTC & SRT confirmation

The status of system monitoring tests and the self-diagnosis status/results can be confirmed.

Function test

This mode is used to inform customers when the vehicle requires periodic maintenance.

ECU part number

ECM part number can be read.

Revision: 2011 October

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DIAGNOSIS SYSTEM (ECM)

*: This function is not necessary in the usual service procedure.

SELF-DIAG RESULTS MODE

Self Diagnostic Item

Regarding items of DTC and 1st trip DTC, refer to 

EC-102, "DTC Index"

.

How to Read DTC and 1st Trip DTC

DTCs and 1st trip DTCs related to the malfunction are displayed in “self-diag results”.
• When ECM detects a 1st trip DTC, “1t” is displayed for “TIME”.
• When ECM has detected a current DTC, “0” is displayed for “TIME”.
• If “TIME” is neither “0” nor “1t”, the DTC occurred in the past and ECM shows the number of times the vehi-

cle has been driven since the last detection of the DTC.

How to Erase DTC and 1st Trip DTC

NOTE:
• If the ignition switch stays ON after repair work, be sure to turn ignition switch OFF once. Wait at least 10

seconds and then turn it ON (engine stopped) again.

• If the DTC is not for CVT related items (see 

EC-102, "DTC Index"

), skip step 1.

1.

Erase DTC in TCM. Refer to 

TM-103, "CONSULT Function (TRANSMISSION)"

.

2.

Select “ENGINE” with CONSULT.

3.

Select “SELF-DIAG RESULTS”.

4.

Touch “ERASE”. (DTC in ECM will be erased.)

Freeze Frame Data and 1st Trip Freeze Frame Data

Work item

Condition

Usage

IDLE AIR VOL LEARN

The idle air volume that keeps the engine within the specified 
range is memorized in ECM.

When learning the idle air volume

EVAP SYSTEM CLOSE

Close the EVAP canister vent control valve in order to make 
EVAP system close under the following conditions.
• Ignition switch ON
• Engine not running
• Ambient temperature is above 0

°

C (32

°

F)

• No vacuum and no high pressure in EVAP system
• Fuel tank temperature is more than 0

°

C (32

°

F)

• Within 10 minutes after starting “EVAP SYSTEM CLOSE”
• When trying to execute “EVAP SYSTEM CLOSE” under 

the condition except above, CONSULT will discontinue it 
and display appropriate instruction.
NOTE:
When starting engine, CONSULT may display “Battery 
voltage is low. Charge battery”, even in using charged bat-
tery.

When detecting EVAP vapor leak 
point of EVAP system

FUEL PRESSURE RELEASE

Crank a few times after engine stalls.

When releasing fuel pressure from 
fuel line

TARGET IGN TIM ADJ*

Idle condition

When adjusting target ignition tim-
ing

TARGET IDLE RPM ADJ*

Idle condition

When setting target idle speed

VIN REGISTRATION

In this mode, VIN is registered in ECM.

When registering VIN in ECM

SELF-LEARNING CONT

The coefficient of self-learning control mixture ratio returns to 
the original coefficient.

When clearing mixture ratio self-
learning value

G SENSOR CALIBRATION

• Park the vehicle on a flat road.
• Adjust pressure in all tires to the specified value.

Calibrates G sensor.

CLSD THL POS LEARN

• Ignition on and engine stopped.

When learning the throttle valve 
closed position

Revision: 2011 October

2012 JUKE

DIAGNOSIS SYSTEM (ECM)

EC-75

< SYSTEM DESCRIPTION >

[MR16DDT ]

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*: The items are the same as those of 1st trip freeze frame data.

DATA MONITOR MODE

Monitored Item

×

: Applicable

Freeze frame data 

item*

Description

DIAG TROUBLE 
CODE
[PXXXX]

• The engine control component part/control system has a trouble code the is displayed as PXXXX. (Refer to 

EC-102, "DTC Index"

.)

FUEL SYS-B1

• “Fuel injection system status” at the moment a malfunction is detected is displayed.
• One of the following mode is displayed.

Mode2: Open loop due to detected system malfunction
Mode3: Open loop due to driving conditions (power enrichment, deceleration enleanment)
Mode4: Closed loop - using oxygen sensor(s) as feedback for fuel control
Mode5: Open loop - has not yet satisfied condition to go to closed loop

FUEL SYS-B2

CAL/LD VALUE [%]

• The calculated load value at the moment a malfunction is detected is displayed.

COOLANT TEMP [

°

C] 

or [

°

F]

• The engine coolant temperature at the moment a malfunction is detected is displayed.

L-FUEL TRM-B1 [%]

• “Long-term fuel trim” at the moment a malfunction is detected is displayed.
• The long-term fuel trim indicates much more gradual feedback compensation to the base fuel schedule than 

short-term fuel trim.

L-FUEL TRM-B2 [%]

S-FUEL TRM-B1 [%]

• “Short-term fuel trim” at the moment a malfunction is detected is displayed.
• The short-term fuel trim indicates dynamic or instantaneous feedback compensation to the base fuel sched-

ule.

S-FUEL TRM-B2 [%]

ENGINE SPEED [rpm]

• The engine speed at the moment a malfunction is detected is displayed.

VEHICL SPEED
[km/h] or [mph]

• The vehicle speed at the moment a malfunction is detected is displayed.

ABSOL TH·P/S [%]

• The throttle valve opening angle at the moment a malfunction is detected is displayed.

B/FUEL SCHDL 
[msec]

• The base fuel schedule at the moment a malfunction is detected is displayed.

INT/A TEMP SE [

°

C] 

or [

°

F]

• The intake air temperature at the moment a malfunction is detected is displayed.

INT MANI PRES [kPa]

• These items are displayed but are not applicable to this model.

COMBUST CONDI-
TION

Monitored item

Unit

Monitor Item Selection

Description

Remarks

ECU IN-

PUT SIG-

NALS

MAIN 

SIGNALS

ENG SPEED

rpm

×

×

Indicates the engine speed comput-
ed from the signal of the crankshaft 
position sensor (POS) and camshaft 
position sensor (PHASE).

• Accuracy becomes poor if engine 

speed drops below the idle rpm.

• If the signal is interrupted while the 

engine is running, an abnormal value 
may be indicated.

MAS A/F SE-B1

V

×

×

The signal voltage of the mass air 
flow sensor is displayed.

• When the engine is stopped, a cer-

tain value is indicated.

• When engine is running specification 

range is indicated in “SPEC”.

B/FUEL SCHDL

msec

×

×

“Base fuel schedule” indicates the 
fuel injection pulse width pro-
grammed into ECM, prior to any 
learned on board correction.

When engine is running specification 
range is indicated in “SPEC”.

Revision: 2011 October

2012 JUKE

EC-76

< SYSTEM DESCRIPTION >

[MR16DDT ]

DIAGNOSIS SYSTEM (ECM)

A/F ALPHA-B1

%

The mean value of the air-fuel ratio 
feedback correction factor per cycle 
is indicated.

• When the engine is stopped, a cer-

tain value is indicated.

• When engine is running specification 

range is indicated in “SPEC”.

• This data also includes the data for 

the air-fuel ratio learning control.

COOLAN TEMP/S

°

C or 

°

F

×

×

The engine coolant temperature (de-
termined by the signal voltage of the 
engine coolant temperature sensor) 
is displayed.

When the engine coolant temperature 
sensor is open or short-circuited, ECM 
enters fail-safe mode. The engine cool-
ant temperature determined by the 
ECM is displayed.

A/F SEN1 (B1)

V

×

×

The A/F signal computed from the 
input signal of the air fuel ratio (A/F) 
sensor 1 is displayed.

HO2S2 (B1)

V

×

×

The signal voltage of the heated ox-
ygen sensor 2 is displayed.

HO2S2 MNTR(B1)

RICH

/

LEAN

×

• Display of heated oxygen sensor 

2 signal:

- RICH: means the amount of oxy-

gen after three way catalyst is rel-
atively small.

- LEAN: means the amount of oxy-

gen after three way catalyst is rel-
atively large.

When the engine is stopped, a certain 
value is indicated.

VHCL SPEED SE

km/h 

or 

mph

×

×

The vehicle speed computed from 
the vehicle speed signal sent from 
combination meter is displayed.

BATTERY VOLT

V

The power supply voltage of ECM is 
displayed.

ACCEL SEN 1

V

The accelerator pedal position sen-
sor signal voltage is displayed.

ACCEL SEN 2 signal is converted by 
ECM internally. Thus, it differs from 
ECM terminal voltage signal.

ACCEL SEN 2

TP SEN 1-B1

V

×

×

The throttle position sensor signal 
voltage is displayed.

TP SEN 2-B1 signal is converted by 
ECM internally. Thus, it differs from 
ECM terminal voltage signal.

TP SEN 2-B1

×

×

FUEL T/TMP SE

°

C or 

°

F

The fuel temperature (determined by 
the signal voltage of the fuel tank 
temperature sensor) is displayed.

EVAP SYS PRES

V

The signal voltage of EVAP control 
system pressure sensor is dis-
played.

FUEL LEVEL SE

V

×

The signal voltage of the fuel level 
sensor is displayed.

START SIGNAL

ON/

OFF

Indicates start signal status [ON/
OFF] computed by the ECM accord-
ing to the signals of engine speed 
and battery voltage.

After starting the engine, [OFF] is dis-
played regardless of the starter signal.

CLSD THL POS

ON/

OFF

×

×

Indicates idle position [ON/OFF] 
computed by ECM according to the 
accelerator pedal position sensor 
signal.

AIR COND SIG

ON/

OFF

×

×

Indicates [ON/OFF] condition of the 
air conditioner switch as determined 
by the air conditioner signal.

Monitored item

Unit

Monitor Item Selection

Description

Remarks

ECU IN-

PUT SIG-

NALS

MAIN 

SIGNALS

Revision: 2011 October

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DIAGNOSIS SYSTEM (ECM)

EC-77

< SYSTEM DESCRIPTION >

[MR16DDT ]

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PW/ST SIGNAL

ON/

OFF

×

×

[ON/OFF] condition of the power 
steering system (determined by the 
signal sent from EPS control unit) is 
indicated.

LOAD SIGNAL

ON/

OFF

×

×

• Indicates [ON/OFF] condition from 

the electrical load signal.

- ON: Rear window defogger switch 

is ON and/or lighting switch is in 
2nd position.

- OFF: Both rear window defogger 

switch and lighting switch are 
OFF.

IGNITION SW

ON/

OFF

×

×

Indicates [ON/OFF] condition from 
ignition switch signal.

HEATER FAN SW

ON/

OFF

×

Indicates [ON/OFF] condition from 
the heater fan switch signal.

BRAKE SW

ON/

OFF

Indicates [ON/OFF] condition from 
the stop lamp switch signal.

IGN TIMING

BTD

C

×

Indicates the ignition timing comput-
ed by ECM according to the input 
signals.

When the engine is stopped, a certain 
value is indicated.

COMBUSTION

These items are displayed but are 
not applicable to this model.

CAL/LD VALUE

%

“Calculated load value” indicates the 
value of the current airflow divided 
by peak airflow.

MASS AIRFLOW

g/s

Indicates the mass airflow computed 
by ECM according to the signal volt-
age of the mass airflow sensor.

PURG VOL C/V

%

• Indicates the EVAP canister purge 

volume control solenoid valve 
control value computed by the 
ECM according to the input sig-
nals.

• The opening becomes larger as 

the value increases.

INT/V TIM(B1)

°

CA

Indicates [

°

CA] of intake camshaft 

advance angle. 

EXHV TIM B1

°

CA

Indicates [

°

CA] of exhaust camshaft 

advance angle. 

INT/V SOL(B1)

%

• The control value of the intake 

valve timing control solenoid valve 
(determined by ECM according to 
the input signals) is indicated.

• The advance angle becomes larg-

er as the value increases.

AIR COND RLY

ON/

OFF

The air conditioner relay control con-
dition (determined by ECM accord-
ing to the input signals) is indicated.

FUEL PUMP RLY

ON/

OFF

Indicates the fuel pump relay control 
condition determined by ECM ac-
cording to the input signals.

Monitored item

Unit

Monitor Item Selection

Description

Remarks

ECU IN-

PUT SIG-

NALS

MAIN 

SIGNALS

Revision: 2011 October

2012 JUKE

EC-78

< SYSTEM DESCRIPTION >

[MR16DDT ]

DIAGNOSIS SYSTEM (ECM)

VENT CONT/V

ON/

OFF

• The control condition of the EVAP 

canister vent control valve (deter-
mined by ECM according to the in-
put signals) is displayed.

- ON: Closed
- OFF: Open

THRTL RELAY

ON/

OFF

Indicates the throttle control motor 
relay control condition determined 
by the ECM according to the input 
signals.

HO2S2 HTR (B1)

ON/

OFF

Indicates [ON/OFF] condition of 
heated oxygen sensor 2 heater de-
termined by ECM according to the 
input signals.

ALT DUTY SIG

ON/

OFF

• The control condition of the power 

generation voltage variable con-
trol (determined by ECM accord-
ing to the input signals) is 
indicated.

- ON: Power generation voltage 

variable control is active.

- OFF: Power generation

I/P PULLY SPD

rpm

Indicates the engine speed comput-
ed from the input speed sensor sig-
nal.

VEHICLE SPEED

km/h 

or 

mph

The vehicle speed computed from 
the vehicle speed signal sent from 
TCM is displayed.

IDL A/V LEARN

YET/

CM-

PLT

• Display the condition of Idle Air 

Volume Learning

- YET: Idle air volume learning has 

not been performed yet.

- CMPLT: Idle air volume learning 

has already been performed suc-
cessfully.

TRVL AFTER MIL

km/h 

or 

mph

Distance traveled while MIL is acti-
vated.

ENG OIL TEMP

°

C or 

°

F

The engine oil temperature (deter-
mined by the signal voltage of the 
engine oil temperature sensor) is 
displayed.

A/F S1 HTR(B1)

%

• Air fuel ratio (A/F) sensor 1 heater 

control value computed by ECM 
according to the input signals.

• The current flow to the heater be-

comes larger as the value increas-
es.

VHCL SPEED SE

km/h 

or 

mph

The vehicle speed computed from 
the vehicle speed signal sent from 
combination meter is displayed.

SET VHCL SPD

km/h 

or 

mph

The preset vehicle speed is dis-
played.

MAIN SW

ON/

OFF

Indicates [ON/OFF] condition from 
ASCD MAIN switch signal.

Monitored item

Unit

Monitor Item Selection

Description

Remarks

ECU IN-

PUT SIG-

NALS

MAIN 

SIGNALS

Revision: 2011 October

2012 JUKE

DIAGNOSIS SYSTEM (ECM)

EC-79

< SYSTEM DESCRIPTION >

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CANCEL SW

ON/

OFF

Indicates [ON/OFF] condition from 
CANCEL switch signal.

RESUME/ACC SW

ON/

OFF

Indicates [ON/OFF] condition from 
ACCEL/RES switch signal.

SET SW

ON/

OFF

Indicates [ON/OFF] condition from 
COAST/SET switch signal.

BRAKE SW1

ON/

OFF

Indicates [ON/OFF] condition from 
brake pedal position switch signal.

BRAKE SW2

ON/

OFF

Indicates [ON/OFF] condition of stop 
lamp switch signal.

VHCL SPD CUT

NON/

CUT

• Indicates the vehicle cruise condi-

tion.

- NON: Vehicle speed is maintained 

at the ASCD set speed.

- CUT: Vehicle speed decreased to 

excessively low compared with 
the ASCD set speed, and ASCD 
operation is cut off.

LO SPEED CUT

NON/

CUT

• Indicates the vehicle cruise condi-

tion.

- NON: Vehicle speed is maintained 

at the ASCD set speed.

- CUT: Vehicle speed decreased to 

excessively low, and ASCD oper-
ation is cut off.

AT OD MONITOR

ON/

OFF

Indicates [ON/OFF] condition of 
CVT O/D according to the input sig-
nal from the TCM.

For M/T models, always “OFF” is dis-
played.

AT OD CANCEL

ON/

OFF

Indicates [ON/OFF] condition of 
CVT O/D cancel request signal.

For M/T models, always “OFF” is dis-
played.

CRUISE LAMP

ON/

OFF

Indicates [ON/OFF] condition of 
CRUISE lamp determined by the 
ECM according to the input signals.

SET LAMP

ON/

OFF

NOTE:
The item is indicated, but not used.

FAN DUTY

%

Indicates a command value for cool-
ing fan. The value is calculated by 
ECM based on input signals.

ALT DUTY

%

Indicates the duty ratio of the power 
generation command value. The ra-
tio is calculated by ECM based on 
the battery current sensor signal.

BAT CUR SEN

mV

The signal voltage of battery current 
sensor is displayed.

A/F ADJ-B1

Indicates the correction of a factor 
stored in ECM. The factor is calculat-
ed from the difference between the 
target air-fuel ratio stored in ECM 
and the air-fuel ratio calculated from 
A/F sensor 1 signal.

P/N POSI SW

ON/

OFF

×

×

Indicates [ON/OFF] condition from 
the park/neutral position (PNP) sig-
nal.

Monitored item

Unit

Monitor Item Selection

Description

Remarks

ECU IN-

PUT SIG-

NALS

MAIN 

SIGNALS

Revision: 2011 October

2012 JUKE

EC-80

< SYSTEM DESCRIPTION >

[MR16DDT ]

DIAGNOSIS SYSTEM (ECM)

INT/A TEMP SE

°

C or 

°

F

×

×

The intake air temperature (deter-
mined by the signal voltage of the in-
take air temperature sensor1) is 
indicated.

AC PRESS SEN

V

The signal voltage from the refriger-
ant pressure sensor is displayed.

FUEL PRES SEN

MPa

Indicates the fuel rail pressure com-
puted by ECM according to the input 
signals.

TURBO BST SEN

V

The turbocharger boost sensor sig-
nal voltage is displayed.

ATOM PRES SEN

V

The atmospheric pressure sensor 
signal voltage is displayed.

FUEL INJ TIM

deg

Indicates the fuel injection timing 
computed by ECM according to the 
input signals.

FUEL INJ B1

msec

ECM-calculated injection pulse 
width of the fuel injector on the Bank 
1 side.

EVAP LEAK DIAG

YET/ 
CM-
PLT

• Indicates the condition of EVAP 

leak diagnosis.

- YET: EVAP leak diagnosis has not 

been performed yet.

- CMPLT: EVAP leak diagnosis has 

been performed successfully.

EVAP DIAG READY

ON/

OFF

• Indicates the ready condition of 

EVAP leak diagnosis.

- ON: Diagnosis has been ready 

condition.

- OFF: Diagnosis has not been 

ready condition.

BAT TEMP SEN

V

The signal voltage from the battery 
temperature sensor is displayed.

THRTL STK CNT B1

NOTE:
The item is indicated, but not used.

HO2 S2 DIAG1(B1)

INC-

MP/

CM-

PLT

• Indicates DTC P0139 self-diagno-

sis (delayed response) condition.

- INCMP: Self-diagnosis is incom-

plete.

- CMPLT: Self-diagnosis is com-

plete.

HO2 S2 DIAG2(B1)

INC-

MP/

CM-

PLT

• Indicates DTC P0139 self-diagno-

sis (slow response) condition.

- INCMP: Self-diagnosis is incom-

plete.

- CMPLT: Self-diagnosis is com-

plete.

H/P FUEL PUMP 
DEG

deg

Displays ECM-calculated fuel dis-
charge position of the high pressure 
fuel pump.

FUEL PRES SEN V

mV

The signal voltage of FRP sensor is 
displayed.

EOP SENSOR

mV

The signal voltage of EOP sensor is 
displayed.

Monitored item

Unit

Monitor Item Selection

Description

Remarks

ECU IN-

PUT SIG-

NALS

MAIN 

SIGNALS

Revision: 2011 October

2012 JUKE

 

 

 

 

 

 

 

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